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/*
* Copyright © 2011 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
* Authors:
* Chris Wilson <chris@chris-wilson.co.uk>
*
*/
#include "igt.h"
#include <unistd.h>
#include <stdlib.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <inttypes.h>
#include <errno.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include "drm.h"
#define OBJECT_SIZE 16384
#define COPY_BLT_CMD (2<<29|0x53<<22|0x6)
#define BLT_WRITE_ALPHA (1<<21)
#define BLT_WRITE_RGB (1<<20)
#define BLT_SRC_TILED (1<<15)
#define BLT_DST_TILED (1<<11)
static void do_gem_write(int fd, uint32_t handle, void *buf, int len, int loops)
{
while (loops--)
gem_write(fd, handle, 0, buf, len);
}
static double elapsed(const struct timeval *start,
const struct timeval *end,
int loop)
{
return (1e6*(end->tv_sec - start->tv_sec) + (end->tv_usec - start->tv_usec))/loop;
}
static const char *bytes_per_sec(char *buf, double v)
{
const char *order[] = {
"",
"KiB",
"MiB",
"GiB",
"TiB",
NULL,
}, **o = order;
while (v > 1000 && o[1]) {
v /= 1000;
o++;
}
sprintf(buf, "%.1f%s/s", v, *o);
return buf;
}
static void test_big_cpu(int fd, int scale)
{
uint64_t offset, size;
uint32_t handle;
size = scale * gem_aperture_size(fd) >> 2;
intel_require_memory(1, size, CHECK_RAM);
igt_require(gem_mmap__has_wc(fd));
handle = gem_create(fd, size);
gem_set_domain(fd, handle, I915_GEM_DOMAIN_CPU, I915_GEM_DOMAIN_CPU);
for (offset = 0; offset < size; offset += 4096) {
int suboffset = (offset >> 12) % (4096 - sizeof(offset));
uint64_t tmp;
gem_write(fd, handle, offset + suboffset , &offset, sizeof(offset));
gem_read(fd, handle, offset + suboffset, &tmp, sizeof(tmp));
igt_assert_eq(offset, tmp);
}
gem_close(fd, handle);
}
static void test_big_gtt(int fd, int scale)
{
uint64_t offset, size;
uint64_t *ptr;
uint32_t handle;
size = scale * gem_aperture_size(fd) >> 2;
intel_require_memory(1, size, CHECK_RAM);
igt_require(gem_mmap__has_wc(fd));
handle = gem_create(fd, size);
gem_set_domain(fd, handle, I915_GEM_DOMAIN_GTT, I915_GEM_DOMAIN_GTT);
ptr = gem_mmap__wc(fd, handle, 0, size, PROT_READ);
igt_assert(ptr);
for (offset = 0; offset < size; offset += 4096) {
int suboffset = (offset >> 12) % (4096 / sizeof(offset) - 1) * sizeof(offset);
gem_write(fd, handle, offset + suboffset, &offset, sizeof(offset));
igt_assert_eq(ptr[(offset + suboffset)/sizeof(offset)], offset);
}
munmap(ptr, size);
gem_close(fd, handle);
}
uint32_t *src, dst;
int fd;
int main(int argc, char **argv)
{
int object_size = 0;
uint32_t buf[20];
int count;
const struct {
int level;
const char *name;
} cache[] = {
{ 0, "uncached" },
{ 1, "snoop" },
{ 2, "display" },
{ -1 },
}, *c;
igt_skip_on_simulation();
igt_subtest_init(argc, argv);
if (argc > 1 && atoi(argv[1]))
object_size = atoi(argv[1]);
if (object_size == 0)
object_size = OBJECT_SIZE;
object_size = (object_size + 3) & -4;
igt_fixture {
fd = drm_open_driver(DRIVER_INTEL);
dst = gem_create(fd, object_size);
src = malloc(object_size);
}
igt_subtest("basic") {
for (count = 1; count <= 1<<17; count <<= 1) {
struct timeval start, end;
gettimeofday(&start, NULL);
do_gem_write(fd, dst, src, object_size, count);
gettimeofday(&end, NULL);
igt_info("Time to pwrite %d bytes x %6d: %7.3fµs, %s\n",
object_size, count,
elapsed(&start, &end, count),
bytes_per_sec((char *)buf, object_size/elapsed(&start, &end, count)*1e6));
fflush(stdout);
}
}
for (c = cache; c->level != -1; c++) {
igt_subtest(c->name) {
gem_set_caching(fd, dst, c->level);
for (count = 1; count <= 1<<17; count <<= 1) {
struct timeval start, end;
gettimeofday(&start, NULL);
do_gem_write(fd, dst, src, object_size, count);
gettimeofday(&end, NULL);
igt_info("Time to %s pwrite %d bytes x %6d: %7.3fµs, %s\n",
c->name, object_size, count,
elapsed(&start, &end, count),
bytes_per_sec((char *)buf, object_size/elapsed(&start, &end, count)*1e6));
fflush(stdout);
}
}
}
igt_fixture {
free(src);
gem_close(fd, dst);
}
igt_subtest("big-cpu")
test_big_cpu(fd, 3);
igt_subtest("big-gtt")
test_big_gtt(fd, 3);
igt_subtest("huge-cpu")
test_big_cpu(fd, 6);
igt_subtest("huge-gtt")
test_big_gtt(fd, 6);
igt_fixture
close(fd);
igt_exit();
}
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